Browsing Institutt for elkraftteknikk by Title
Now showing items 454-473 of 2419
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Control of Voltage Source Converters for Power System Applications
(Master thesis, 2011)The research work is aimed on the investigation of possible modeling and control schemes for the dc-link of VSC, with the purpose of identifying the impact of such modeling and control on the dynamics of the conversion ... -
Control of VSC During Unsymmetrical AC Faults in Offshore Wind Farms
(Master thesis, 2013)This master thesis has analyzed the eects of unbalanced faults in the ACgrid of an oshore wind farm. The wind farm is connected to shore with aVoltage Source Converter (VSC) HVDC link, and the wind turbine genera-tors ... -
Control of VSC-HVDC for wind power
(Master thesis, 2008)With the recent developments in semiconductors and control equipment, Voltage Source Converter based High Voltage Direct Current (VSC-HVDC) has attracted the growing interest of researchers. The use of VSC technology and ... -
Control of Wave Energy Converter with constrained electric Power Take Off
(Master thesis, 2011)Because of ocean waves' high energy density and substantial, global technical potential wave energy might become a significant contributor to supply the world's increasing energy demand. The nature of ocean waves is strongly ... -
Control of wireless power transfer systems for marine applications
(Master thesis, 2016)This report is a master thesis whose purpose is to show the steps in designing a control system used for regulating a system for inductive power transfer (IPT) of marine vessel and offshore applications. The constant ... -
Control Optimization of the Offshore HVDC Grid based on Modular Multilevel Converter for Improving DC Voltage Stability
(Peer reviewed; Journal article, 2020)The aim of this paper is to reduce the voltage oscillation of the HVDC cable in an offshore point-to-point configuration based on the modular multilevel converter. An optimization methodology based on semidefinite programming ... -
Control strategies for residential battery energy storage systems coupled with PV systems
(Chapter, 2017)This paper presents, and compares the performances of four control strategies for residential battery energy storages coupled with photovoltaic (PV) energy systems. The control strategies are: 1) rule based control, 2) ... -
Control Strategies for Variable Speed Operation of Pumped Storage Plants with Full-size Converter Fed Synchronous Machines
(Chapter, 2021)The full-size converter fed synchronous machine (CFSM) for variable speed operation of a pumped storage power plant exhibits multiple advantages over the state-of-the-art Doubly Fed Induction Machine (DFIM) technology. The ... -
Control Strategies of a Converter-Fed Synchronous Machine for Variable Speed Hydropower
(Master thesis, 2020)Pumpekraftverk vert sett på som ei effektiv form for storskala energilagring, og har i long tid vore brukt for utjevning av forbruk og etterspørsel på dagsbasis. Framtidas kraftnett vil sjå eit auka behov for kontrollerbare ... -
Control Techniques of Modular Multilevel Converter
(Master thesis, 2017)This thesis aims to address the challenge of suppressing the circulating current. Principle of operation and mathematical derivations, common control methods for inner dynamics and software/hardware algorithm implementation ... -
Control, Dynamics and Operation of Multi-terminal VSC-HVDC Transmission Systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:354, Doctoral thesis, 2012)In recent years, there has been an increased development and deployment of renewable energy resources to meet the ever increasing electric power demand and to limit the use of fossil fuels. This has spurred offshore wind ... -
Converter stress on transformer insulation materials
(Master thesis, 2022)En økende andel teknologier som er koblet til strømnettet anvender kraftelektroniske omformere, både på forbruks- og produksjonssiden. Dette påvirker hvordan isolasjonsmaterialene til det elektriske utstyret i strømnettet ... -
Converting an Induction Motor into a Permanent Magnet Synchronous Motor: - replacing the rotor in a used induction machine with a PM rotor
(Master thesis, 2011)Abstract In this article the possibility of exchanging the rotor of an IM with a high performance PM rotor to increase the motor s efficiency and PF is investigated. A standard industrial IM is used as a reference motor ... -
Convex Models for Optimal Utility-Based Distributed Generation Allocation in Radial Distribution Systems
(Journal article; Peer reviewed, 2018)This paper introduces various models for optimal and maximal utility-based distributed generation penetration in the radial distribution systems. Several problems with different probabilistic indices as objective functions ... -
Cooling of Buried Power Cables by Using Metallic Pipes as an Alternative to Polymeric Pipes - Comparison of Results from Experiments and Simulations
(Master thesis, 2016)It is common to install power cables in polymeric pipes at road crossings and in urban areas where exceptional protection and flexibility is necessary. In such case, the pipe is usually filled with air, which increases the ... -
Coordinated Control of Distributed Three-and Single-phase Inverters Connected to Three-Phase Three-Wire Microgrids
(Journal article; Peer reviewed, 2019)This paper explores the coordinated strategy named Power-Based Control to properly coordinate grid-tied single-and three-phase distributed energy resources in three-phase three-wire microgrids. By means of a narrowband, ... -
Coordinated Control of Multiple HVDC links using backstepping
(Journal article, 2012)This article regards a power system containing multiple High Voltage Direct Current (HVDC) links. The topic is to exploit the HVDC lines’ ability to control the power supplied by them to increase the stability of the system. ... -
Coordinated Control of Parallel Power Conditioners Synthesizing Resistive Loads in Single-Phase AC Microgrids
(Chapter, 2019)Without proper coordination, power conditioners within microgrids are prone to suffer from resonance phenomena due to the complex and dynamic interactions among the main grid, nonlinear loads and distributed converters. ... -
Coordinated Decentralized Control of Dynamic Volt-Var Function in Oil and Gas Platform With Wind Power Generation
(Peer reviewed; Journal article, 2023)The integration of offshore wind energy power system is a solution to reduce carbon emissions in the oil and gas sector. However, the intermittent profile of wind power generation can bring challenges of voltage/frequency ... -
Coordinated Multi-objective tuning of PSS and AVR
(Master thesis, 2021)Spenningsregulatoren (AVR) i en generator sørger for å holde terminalspenningen konstant ved å regulere feltspenningen som tilføres feltviklingene. Synkrongeneratorer kan utstyres med dempetilsats (PSS) som motvirker ...